Dynamic and Static Yield Stress of Metallic Suspensions

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Abstract:

Oscillation experiments, creep tests and shear stress ramps have been performed to analyze the yield stress and its time dependency. It has to be distinguished between iso-structural, dynamic and static yield stress. The iso-structural yield stress occurs immediately after shearing. Since the slurry structure remains unchanged, it is equivalent to the structure during shearing. At rest an internal structure builds up, this leads to an increase of the yield stress, which is referred to as the dynamic yield stress. It increases until its maximum value, the static yield stress, is reached.

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Periodical:

Solid State Phenomena (Volumes 116-117)

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587-590

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October 2006

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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